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(No Model.) 2 Sheets-Sheet 1.

- T. A.' WALTHBR. AUTOMATIC HYDRAULIC PUMP.

No. 525,731. Y Patented Sept. 11, 1894.

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(No Model.) 2 Sheets-Sheet 2.

T. A. WALTHBR. V AUTOMATIC HYDRAULIC PUMP.

No. 525,731. Patented Sept. 11, 1894.

'UNITED STATES PATENT OFFICE..

THEODORE A. WALTHER, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWOFIFTHS TO CHARLES TURNER BROWN, OF SAME PLACE.

*IAUTOMATIC HYDRAU LIC PUMP.

SPECIFICATION forming part of Letters Patent No. 525,731, dated September 11, 1894.

Application led January 19, 1894. Serial No. 497,372. (No model.)

To aZZ whom it may concern:

Be it known that I, THEODORE A. WAL- THER, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automatic Hydraulic Pumps,'of which the following, when taken in connection with the drawings accompanyingand forming a part thereof, is a full and complete description, sufficient to enable those skilled in the art` to which it pertains to understand, make, and use the same.

My invention relates to hydraulic pumps designed to be attached to a water works'system or to other water supplies whereby water under pressure is furnished, and thereby water, either from the same or a diierent water supply forced to a greater height than by the supply furnishing, under pressure, the water actuating the machine. And the object of my invention is to obtain a hydraulic pump which will be automatic in its action, that is to say a hydraulic pump whereby when a faucet is turned to allow water to run from the pipes containing water forced thereinto by the hydraulic pumpembodying my invention, such hydraulic pump will be, at once, set in operation by the water furnished thereto under pressure, and so water will be forced to and will run from the openfaucet.

A further and very important object of my invention is to obtain an automatic hydraulic pump which will be simple in construction, not liable toV breakage or other injury, or to get out of repair; and will be economical ,in its waste of water, or in the watery required to actuate it and which thereby runs to waste. And a still further object of my invention is to obtain an automatic hydraulic pump of the kind named whereof there shall be no moving parts exposed to view or to injury when in operation.

The manner in which the invention by me made to accomplish the results sought can be embodied in an automatic hydraulic pump is well illustrated in thedrawings referred to, wherein- Figure 1 is a top plan view of such machine; Fig. 2, a front elevation; Fig. 3, a horizontal sectional View on line 3-3 of Fig. 2,

viewed in the direction indicated by the arrows; Fig. 4, a vertical sectional view on line 4-4 of Fig. 1, viewed in the, direction indicated by the arrows; Fig. 5, a vertical sectional view, on an enlarged scale, of a slide valve entering intothe machine as an element thereof; Fig. 6, au elevation of such slide valve on line 6%-6 of Fig. 5; Fig. 7, a vertical sectional view of the main features of the slide valve on the same plane as in Fig. 5, but 6o with the valve in a different position than in such Fig. 5; Fig. 8, a vertical sectional view of a check valve forming an element in the machine; Fig. 9, a vertical sectional view of a three way valve or stop cock forming an element in the machine, and Fig. 10 a vertical sectional view of the three way Vvalve or stop cock illustrated in Fig. 9, with the movable plug thereof in a diierent position from which the same is illustrated in Fig. 9. Fig. 7o 11 is a sectional 4view ofa lmodified construction of the drawing cylinder and pistou constituting the motor part o`r` portion of the slide Y valve shown in detail in Figsf, 6 and 7, and ,y of afour way cock working in combination 75 therewith, such modifiedconstruction of the cylinder and piston requiring the substitul? tion of such four way cock for the three way valve or cock illustrated in Figs. 9 and 10 and used'in combination with the cylinder, piston, 8o nl and spring illustrated in Figs. 1, 2, 5, 6 and f7. The same letter of reference is employed to indicate. a given part where more than one view thereof appears in the several figures of the drawings. Y

A is the larger and driving cylinder and B is the smaller and driven cylinder. `Water extending through cylinder A actuates the device and then Aruns to waste and water passing through the cylinder B is driven or 9o lifted to a height, when desired, dependent i on the relative size of cylinders A, B and the u pressure on the Water admitted to cylinder A.

au. a are the supporting legs ofthe ma-` chine. i

C is the supply pipe for cylinder A andA where the water elevated by cylinder B is obtained from the same water supply, also the supply pipe for cylinder B, by means .of branch pipe D.

ameter than the part g2 of such hole.

E is a slide valve by which the water entering cylinder A through supply pipe C iS directed to the proper side of the piston head contained in cylinder A, and to the waste pipe F.

G is the piston head in cylinder A and g is the piston rod extending through the adjacent heads a and b of cylinders A and B into cylinder B. H is the piston head in such cylinder B.

I I I I are check valves interposed in the inlet and outlet pipes J J and K K whereby water is supplied to and conveyed from cylinder B.

L L are pipes extending from slide valve E to the ends of cylinder A and serve alternately as supply and discharge pipes, according to the position of the sliding block e in such slide valve E. The position of this sliding block e is determined by means of three way cock M, cylinder N and the connecting conduits or pipes O, O and waste pipe O2.

The three way cock M is placed within the cylinder A and from the handle lm of such cock, rod P extends upward into the hollow tube constituting the piston rod g. p is a collar on rod P.

The rod P is of such length that as piston rod g extends downward in cylinders A B and nearly reaches its determined lowest position such rod P will be pushed downward by the piston rod, the upper end of such rod P coming in contact with the bottom of the hollow portion of such piston rod g; andthe ferrulepon such rod P is adjusted in such position on the rod that as the piston rod g approaches too near its extreme upward position such fer-rule will come in -contact with the shoulder formed by the part g', of the hole in the piston rod g being of lesser di- The three way cock M is thus alternately turned into the positions illustrated in Figs. 9 and lO of the drawings by the upward and downward movement of the piston rod. The position of the three way cock M determines, in the manner about to be described; the position of the sliding block of slide valve E, and hence the admission and escape of water to the two sides of the piston head G in cylinder A; and so controls the movement of such piston head G in cylinder A, provided of course, some one of the faucets connected with the pipe K is opened to allow of the escape of water therefrom and from cylinder B.

I is a chamber in slide valve E with which pipe L communicates and I is a chamber with which pipe L communicates. Z2 is a chamber in suchslide valve which communicates with A the discharge pipe F.

,chamber Z2 and through chamber P with n2 is a spring yieldingly holding the p' head n and sliding block e in their resp i extreme upward positions.

The pipe O extends from supply pipe three way cock M and pipe O extends three way cock M to andinto cylinderNa the piston head n therein. The pipe O* tends from three way cock M to discharge m F. 0.3, Fig. 2, is a stop cock in pipe O. Y three way cock M consists of handle m, m casing m and plug fm2. Plug fm2 has the way m3 extending therethrough and c y way m4.

When plug m2 of three way cock M the position indicated by the handle m` Fig. 4 and illustrated in Fig. 9; water can will extend from supply pipe C through O to and through passage way msin pl of three way cock M, thence through pi to and into cylinder N above the piston k '11,/ thereby depressing such piston heath` gether with piston rod n' and sliding *I* of valve E. when Sliding block e is is *i position, (being the position thereof trated in Figs. 5 and 6) chamber Z is in munication with supply pipe C, and water flow from such supply pipe C through v E into chamber Z, from thence into pipe L, from thence into the cylinder A above piston head G, and will thereby depress y piston head together with piston rod g f piston head H in cylinder B. This de however, of piston head G, piston rod g. piston head H, cannot, of course, occur, a faucet is opened or other outlet made, by the'water already contained in pipe K" escape therefrom, thus providing room fo!"` water in cylinder B underneath piston H to, flow therefrom into the pipe K. check valves I I in pipe K prevent any-q owof water from pipe K into cylin either above or below the piston head H: the check valvesII in pipeJ prevent t of water from the cylinder B into auch .l J while permitting the iniiow from pipes J J into such cylinder B. Andthe sliding block e is in the position. illustrated in Figs. 5 and 6, that is the f last above referred to (and wherein watel'- y supply pipe C can extend through valveE y chamber Z and pipe L), chamber Z' is in munication by means of passage way e4 www pipe F. Vater, therefore, contained in der A underneath piston .head G can therefrom through pipe L,chamberZ',v 1 z way e2, and chamber Z2, to waste pipe E, which it ilows to waste.

W'hen the piston heads G H, and pistol ghave moved downward so faras to tu means of rod P, the handle m of three y cock M, downward, the plug m2 will beth turned into the position illustrated in w Y l0, so cutting off the supply of water y supply pipe C to cylinder N and open way through crossway m4 and way ms in 'm2 for the water already c'ontained in cyli e i'" N to dow therefrom by way of pipe O', the passage way iu plug m2 and pipe O2, and the resilience of spring n2 will elevate piston head fn in cylinder N, together with the water there-over, and such water will flow from the cylinder in the way described. The elevation of the piston head fn. will raise sliding block e of slide valve E into the position illustrated in Fig. 7 and water under pressure will thereby be admitted from supply pipe C through chamber Z and pipe L into cylinder A, underneath piston head H, while the water contained in such cylinder above'the piston head H will iiow therefrom through pipe L, chamber Z, passage way e2, chamber Z2, and pipe F, to waste.

Q Q are respectively, air chambers.

R, is a stuffing box in cylinder A and R is a stuffing box in cylinder N.

The check valves I, are by me constructed, preferably, in the manner illustrated in Fig. 7, wherein, I is a ball of non-elastic material as say, glass; l', a ring of elastic material, as say, rubber; and I3 a tube having hole I4 on one side thereof (for water to pass through) and shoulder I at the lower end thereof. Shoulder I5 serves to hold the elastic ring I2 in place, and to compress it if desired.

In the modification of the cylinder N and the connections thereof illustrated in Fig. 4 of the drawings, the spring n2 is dispensed with and water'admitted to both sides of piston head n. In this modification the cylinder is lettered N', the pipe extendingfrom the four way cock M to the cylinder above the piston head n', is lettered O' and the pipe extending from such four way cock to cylinder N below cylinder headn is lettered O4. The waste pipe O2 is retained, but the plug of the four way cock, lettered m5, has therein passage ways m6, and m7. In this modification when plug m5 is in the position illustrated in Fig. 1l water is admitted from inlet O, passage way m6 and pipe O to cylinder N` above the piston head fn., and the water in such cylinder N is allowed to escape therefrom through pipe O4, passage way m7, and pipe O2, and flow to waste. When the handle of four way cock M is depressed by rod P, in the manner hereinbefore described in relation to three way cock M, plug m5 is moved in the direction indicated by the arrow m8 until passage way m5 connects pipe O to pipe O2 as indicated by the dotted lines in Fig. 1l, and passage way m7 connects pipe O with pipe O4. The movement of piston head fn. is thus reversed, the operation so far as the sliding block c and the remainder of the several parts of the machine being the same as when the sliding block e is raised by the resilience of spring n2.

Heads a and b of cylinder A B are firmly secured together so that water cannot escape from between them. It will therefore be seen that when water is contained in cylinder A above piston head,Gr, under pressure, water will also be contained in cylinder B underneath piston head H under greater pressure. The tendency of water to pass or leak through stuing box R will therefore be from cylinder B into cylinder A, and any water which may pass through such packing box will assist in forcing piston head G downward. And it will also be observed that when water under pressure is contained in cylinder A underneath piston head G, the water above such piston head is not under pressure, nor is the water in cylinder B underneath piston head H. under pressure, and there is therefore at such time no tendency for Water to pass in either direction (except by gravity) through thestuiing box R. The stuug box R may therefore be comparatively loose on piston rod g and much friction in my device is thereby obviated. It will also be observed that when water is contained (under pressure) in cylinders N, and N above the piston head fn., there is practically no tendency for water to pass in either direction through stuffing box R', and when no water is contained (under pressure) above the piston head n, any water passing through such stuiiing box may run to waste through pipe O and the connections thereto hereinbefore described. And too, by the disposition of the several parts, as described, no oiling or cleaning is required to the machine.

S is a pipe t0 which a pipe extending to a water supply designed for cylinder B alone may be attached. When pipe S is coupled to such other supply pipe, pipe J is uncoupled from pipe D and the end of such pipe J closed.

When the stop cock O3 is closed the device is inoperative. v

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

l. The combination of a motor and a pump cylinder, a hollow piston rod common to both cylinders, piston heads on the ends of the rod, a cock in the motor cylinder, a rod extending into the hollow piston rod, a connection between the rod and the cock so that the movement of the hollow piston rod will control the cock, a water supply extending to the cock, and from the cock to a third cylinder, a water waste extending from the cock, a third cylinder having a piston rod and head, a slide valve actuated by the piston head and rod in the third cylinder, a water supply extending to the slide valve and from thence to the ends of the larger cylinder, and a water waste extending from the slide valve, a Water supply extending to the pump cylinder, pipes extending from the pump cylinder to the place of delivery of the water passing therethrough, and check valves in the water supply extending into the pump cylinder and the pipes extending therefrom substantially as described.

2. The combination of a motorl and a pump cylinder, a hollow piston rod common to the cylinders, piston heads on the ends of the piston rod, a cock in the motor cylinder, a rod extending into the hollow piston rod, a con- IOO IIO

nection between the rod and the cock so that the movement of the hollow piston rod will control the cocl,a watersupply extending to the cockY and from the cock to a third cylinder, a water wasteextending from the cock, a third cylinder having a piston rodand head, a slide valve actuated by the piston rod and head in the third cylinder, a spring yieldingly holding the piston rod and head and the slide valve connected thereto in given position,

Vand a Vwater supply extending tothe rst named cylinders, respectively, the one to the lnotor cylinder extending through the Slide valve: substantially as described.

3. The combination of cylinders arranged on a common axial line with a hollow piston outlet, and a waste pipe extending into the cylinder Within which the cock is placed and connected thereto; substantially as described.

4. The combination of cylinders arranged on a common axial line, a hollow piston rod common to both cylinders, piston heads on the ends of the hollow piston rod, a water sup- Y ply and Vwater waste cock within one ofthe' cylinders and a rod extending into the holn' piston rod and connected with the cock Il` that the movement of such hollow piston controls the cock, a water inlet and a mt!! outlet extending to the cock, a waste pipe-unf tending from the cock, a third cylindel'rtr which thewater outlet of the cock extendgl-MNI piston head Vand rod in the third cylinderlld a slide valve connected Vto such last nulli piston rod substantially as described.

5. In an automatic motor, the combinatil Vof a inotorcylinder having a piston head Y aV hollow Vpiston rod therein, a secondoyli` der having a piston head and rod therein; 8f slide valve connected to the last named ton rod the position whereof 'determineeta flow of water into and out of the motor cylilfder, and a water supply and water Waste i within the motor cylinder with a rod exten 5l ing into the hollow piston rod therein lli: y, connected to the cock, and water Yinlet d water outlet pipes extending into the mehr cylinder and to the cock, and connecting il cock with the auxiliary cylinder; substllY $5 tially as described.

THEODORE A. VVALTHER.- Witnesses:

CHARLES TURNER BROWN, L. N. NoLL. 

